This study aimed to explore the effectiveness of some training programs in developing some physical abilities for young athletes in karate and gymnastics. To achieve this, the researchers used a quasi-experimental approach on a sample of (42) young karate and gymnastics athletes, with an average age (15) year. They were divided into (3) groups as follows: the first group was a control group (n=14) and followed the traditional training method, the second group was an experimental group (n=14) and followed the complex training method, while the third group was an experimental group (n=14) and followed the multi-set training method. The study tools consisted of a set of physical tests such as broad jump and squats. To analyze the data of the study sample, mean averages, standard deviations, independent samples t-test, paired samples t-test, and analysis of variance were used, using version (24) of the Statistical Package for the Social Sciences (SPSS) with a confidence level of (95%). The results of the study showed improvement in physical abilities (P <0.05) in most variables (maximum strength, explosive strength, motor speed), except for quick response and speed-specific strength, which showed varying results between karate and gymnastics. The results also showed statistically significant differences in the averages of post-tests among the three methods in favor of the complex and multi-set training methods in physical abilities. The results also indicated statistically significant differences (p<0.05) in the post-measurement between the complex training method and the multi-set training method in physical abilities, in favor of the multi-set training method. In light of the study results, it can be concluded that the proposed methods, complex training and multi-set training, can improve some physical abilities. This does not negate that using the traditional method can also improve other physical abilities.